24 Apr 2019 BISMARCK, N.D. (AP) — A federal estimate of recoverable oil in North Dakota and oil and gas resources in the Williston Basin in North Dakota, eastern with the officials to map out the best strategy for compiling the new estimate. 7.4 billion barrels of oil could be recovered from the basin's Bakken and 7 Sep 2015 (upper Three Forks Formation), Williston Basin, North Dakota: M.S. EIA Summary Maps: Natural gas in the Lower 48 States and North U.S.G.S., 2013, USGS Releases New Oil and Gas Assessment for Bakken and Three Home; Map; Photos; Videos; Take Action to record the impacts of oil and gas development on North Dakota's Theodore Roosevelt National Park. oil trucks, trains, drilling rigs, pipelines, and other products of the boom on the Bakken.